What did spain do after the american revolution to discourage american settlements west of the appalachian mountains?           a. spain attacked american ships at sea.   b. spain placed a heavy tariff on american-made goods.   c. spain went to war with the united states.   d. spain forbade american trade in new orleans.  

In 1990, the average income for an american worker was $1,518 per month. in 2000, the average income for an american worker was $2,632 per month. during this time period, a basket of necessities (food, housing, etc.) increased from $657 per month in 1990 to $1,402 per month in 2000. the real value of income ▼ increased decreased over that 10-year period.

The principal effector function of igm is

Based on this map, what can be concluded about the inca empire? (4 points) it was in a highlands region. it was in a mountainous region. it was in the amazon basin. it was in north america.